Food Production

Question 1

The function of pesticides

Answer 1

CHEMICALS WHICH KILL PLANTS AND ANIMALS WHICH REDUCE CROP YIELD

Question 2

How pesticides enter the food chain

Answer 2

THEY ARE ABSORBED BY PLANTS

Question 3

Pesticides will in the tissues of organisms

Answer 3

ACCUMULATE

Question 4

Levels of pesticides with movement through a food chain

Answer 4

INCREASE

Question 5

Two alternatives to fertilisers and pesticides

Answer 5

BIOLOGICAL CONTROL,
GM CROPS

Question 6

The form of nitrogen which plants absorb into their roots

Answer 6

NITRATES

Question 7

How nitrates are used by plants and animals

Answer 7

NITRATES ARE USED TO
PRODUCE AMINO ACIDS WHICH ARE SYNTHESISED INTO PROTEIN
PROTEIN

Question 8

The function of fertilisers

Answer 8

ADDED TO THE SOIL TO
INCREASE THE NITRATE
CONTENT OF THE SOIL AND INCREASE CROP YIELD

Question 9

This term is used to describe the process by which fertilisers are washed off out of fields and into freshwater

Answer 9

LEACHING

Question 10

Leaching causes an increase in these microscopic plants

Answer 10

ALGAE

Question 11

The impact of algal blooms on
Biodiversity

Answer 11

DECREASES BIODIVERSITY

Question 12

Describe what occurs after algal blooms block out sunlight

Answer 12

AQUATIC PLANTS DIE, BACTERIA FEED ON DEAD MATERIAL, INCREASE IN NUMBER AND USE UP OXYGEN, REDUCING AVAILABILITY FOR OTHERS

Question 13

The effect of algal blooms on the oxygen concentration of
freshwater

Answer 13

DECREASED O2 CONCENTRATION